I've been lurking around the site for awhile I see many of you have remapped your cars for more power. My question though is have any of you had any damage to the motor or more specifically the transmission with such an increase in power?

There are cars running JB products with over 30k miles without issues. Check N54tech for verification.

Appreciate the feedback guys. I only ask because I'm currently a member of a G35 forum and all the guys stress damaging the transmission or blowing engines when drastically increasing power. I'm surprised that for $600, you can add so much power to these cars without having to add any other supporting parts to handle the power. I guess that's the benefit of owning a BMW.